9. Would you recommend me some trousers?
你能推荐一些裤子给我吗？
还能这样说：
Would you like to recommend some trousers to me?
Could you give me some suggestions about the trousers?
应用解析：
recommend sb./sth. to sb. （特质等）使某人或某事显得可取。
例如：His diligence recommended him to his teacher.
他很勤奋，老师对他都很好。
10. Are you having a sale now?
你们在打折吗？
还能这样说：
Is your shop on sale now?
Do you have any discount?
谚语：
Greedy folks have long arms.
心贪手长。
11. How about the qualities of your products?
你们的产品质量怎么样？
还能这样说：
What about the qualities of your products?
Can you tell me something about the qualities of your products?
应用解析：
native product 土产；
finished (substandard) product 成（次）品；
semi-finished product 半成品；
dairy products 乳制品；
fish products 鱼加工品
12. Could I have a look at that dress in the showcase?
我能看看橱窗里的那件衣服吗？
还能这样说：
Am I allowed to look at that dress in the showcase?
Would you mind me to look at dress in the showcase?
应用解析：
all dressed up and nowhere to go 打扮得整整齐齐却无处可去炫耀，平白无故地打扮得漂漂亮亮；
be dressed (up fit) to kill 穿得过于时髦，穿得过于花哨；
dress sb. down 狠狠地训斥某人，鞭打某人